Mostly adding a descriptive frontmatter to workflow files. Also address
some formatting and outdated artifacts
No functional changes outside of
[d5457c3](d5457c39ee),
[90708a0](90708a0d99),
and
[338c82d](338c82d21e)
Trying to unblock documentation build pipeline
* Bump langgraph dep in docs
* Update langgraph in lock file (resolves an issue in API reference
generation)
